# 1 "main.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 1 "<command-line>" 2
# 1 "main.c"
# 1 "head.h" 1


int add(int,int);
int sub(int,int);
int mul(int,int);
double div(int,int);
# 2 "main.c" 2
int main(void)
{
 int a,b;
 printf("enter two numbers:");
 scanf("%d %d", &a,&b);
 printf("add:%d\n",add(a,b));
 printf("sub:%d\n",sub(a,b));
 printf("mul:%d\n",mul(a,b));
 printf("div:%d\n",div(a,b));
 return 0;
}
